US10034430B2 - Combine harvester with adjustable inclination of straw walkers - Google Patents

Combine harvester with adjustable inclination of straw walkers Download PDF

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Publication number
US10034430B2
US10034430B2 US15/198,987 US201615198987A US10034430B2 US 10034430 B2 US10034430 B2 US 10034430B2 US 201615198987 A US201615198987 A US 201615198987A US 10034430 B2 US10034430 B2 US 10034430B2
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Prior art keywords
pivot frame
combine harvester
shaft
straw walker
pivot
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US15/198,987
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US20170000032A1 (en
Inventor
Bart M. A. Missotten
Johan A. Van Der Haegen
Michiel Vanderstichele
Koen Landschoot
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Blue Leaf IP Inc
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CNH Industrial America LLC
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Assigned to CNH INDUSTRIAL BELGIUM NV reassignment CNH INDUSTRIAL BELGIUM NV ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Landschoot, Koen, MISSOTTEN, BART M.A., VAN DER HAEGEN, JOHAN A, Vanderstichele, Michiel
Assigned to CNH INDUSTRIAL AMERICA LLC reassignment CNH INDUSTRIAL AMERICA LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CNH INDUSTRIAL BELGIUM NV
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Assigned to BLUE LEAF I.P., INC. reassignment BLUE LEAF I.P., INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CNH INDUSTRIAL AMERICA LLC
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F12/00—Parts or details of threshing apparatus
    • A01F12/30—Straw separators, i.e. straw walkers, for separating residual grain from the straw
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
    • A01D41/12—Details of combines
    • A01D41/1243—Devices for laying-out or distributing the straw
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
    • A01D41/12—Details of combines
    • A01D41/127—Control or measuring arrangements specially adapted for combines
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
    • A01D41/12—Details of combines
    • A01D41/127—Control or measuring arrangements specially adapted for combines
    • A01D41/1276—Control or measuring arrangements specially adapted for combines for cleaning mechanisms
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D75/00—Accessories for harvesters or mowers
    • A01D75/28—Control mechanisms for harvesters or mowers when moving on slopes; Devices preventing lateral pull
    • A01D75/282—Control mechanisms for harvesters or mowers when moving on slopes; Devices preventing lateral pull acting on the grain cleaning and separating device
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F12/00—Parts or details of threshing apparatus
    • A01F12/30—Straw separators, i.e. straw walkers, for separating residual grain from the straw
    • A01F12/38—Straw separators, i.e. straw walkers, for separating residual grain from the straw with juxtaposed and independently-moved shaker bars or the like
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F12/00—Parts or details of threshing apparatus
    • A01F12/44—Grain cleaners; Grain separators
    • A01F12/446—Sieving means
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F12/00—Parts or details of threshing apparatus
    • A01F12/44—Grain cleaners; Grain separators
    • A01F12/446—Sieving means
    • A01F12/448—Sieve adjusting means
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F12/00—Parts or details of threshing apparatus
    • A01F12/56—Driving mechanisms for the threshing parts

Definitions

  • the present invention is related to agricultural combine harvesters equipped with straw walkers for moving threshed crop materials through the machine.
  • straw walkers are mounted downstream of the threshing rotors to transport crop material towards the rear of the combine whilst grain and chaff that falls through the straw walkers is recuperated.
  • the straw walkers are usually shaped as transport frames with a saw-tooth shaped profile, arranged side by side, and subjected to a reciprocating motion which drives the transport of the crops.
  • a phase difference between adjacent straw walkers is applied in these reciprocating movements, usually by mounting the straw walkers on a pair of crank shafts with suitably designed crank portions.
  • Straw walkers are generally mounted at a forwardly inclined angle, designed in conjunction with the shape and angle of the saw-tooth shaped stages, so as to obtain an efficient transport of the crops when harvesting on essentially flat terrain, in average weather conditions and for a number of crop types.
  • a forwardly inclined angle designed in conjunction with the shape and angle of the saw-tooth shaped stages, so as to obtain an efficient transport of the crops when harvesting on essentially flat terrain, in average weather conditions and for a number of crop types.
  • transport and discharge of the crops may deteriorate.
  • optimal operation of the straw walkers may be difficult when harvesting in humid conditions or when certain crop types are harvested which require specific transport forces.
  • DE-A-19649020 describes a combine wherein the straw walkers are mounted on eccentrically rotating bearings coupled to an axle with a fixed diameter instead of to a crank shaft.
  • the degree of eccentricity may be adjustable. This too brings flexibility to the straw walker operation, but it is also quite a complex and expensive solution.
  • a combine harvester comprising at least one straw walker extending in a longitudinal direction of the harvester and supported by a front and rear shaft, said shafts being rotatable about respective rotation axes, each shaft provided with one or more eccentric portions, wherein the straw walker is rotatably mounted on an eccentric portion of the respective front and rear shafts, so that the simultaneous rotation of the shafts actuates a reciprocating motion of the straw walker, wherein the combine is further provided with a pivot frame and one or more actuators, configured to adjust the angular position of the frame by pivoting the frame about a pivot axis oriented transversally to said longitudinal direction, and wherein the front and rear shafts are configured to rotate with respect to the pivot frame, so that the straw walker's angular position is adjustable while the straw walker executes said reciprocating motion.
  • FIG. 1 is a side view of a conventional combine harvester with reciprocating straw walkers
  • FIG. 2 illustrates crank shafts on which the straw walkers are mounted in the conventional combine of FIG. 1 ;
  • FIG. 3 is a side view of relevant components of a combine harvester, in accordance with an exemplary embodiment of the present invention.
  • FIG. 4 illustrates a pivot frame and crank shafts on which straw walkers are mounted in the combine of FIG. 3 , in accordance with an exemplary embodiment of the present invention.
  • FIG. 5 illustrates another exemplary embodiment of straw walkers, in accordance with an exemplary embodiment of the present invention.
  • FIG. 1 shows a side view of a conventional combine harvester.
  • the combine comprises a header 1 at the front, equipped with knives 2 which cut the crops, e.g. wheat, corn or rice, at a given height from the ground.
  • the crops are gathered towards a feeder section 3 , which moves a layer of crops up towards a threshing rotor assembly 4 .
  • a majority of grains is separated from the residue crop material, mainly consisting of stalks and leaves, the grains falling onto a grain pan 5 and further towards a set of sieves 6 , with light chaff being blown through the sieves by a blower 7 .
  • the residue appearing at the exit of the threshing rotor assembly 4 is thrown onto the straw walkers 10 .
  • FIG. 2 shows a schematic 3D view of the conventional crank shafts 11 and 12 , which are rotatable about axes 13 and 14 respectively.
  • the crank shafts 11 / 12 have crank portions 15 / 16 extending radially outwards from the rotation axes 13 / 14 .
  • Each straw walker 10 is rotatably mounted on two bearings (not shown) mounted respectively on the crank portion 15 of the front shaft 11 and on the crank portion 16 of the rear shaft 12 .
  • the straw walker's reciprocating motion is thus actuated by the circular motion of the crank portions 15 / 16 with respect to the rotation axes 13 / 14 .
  • the crank shafts 11 / 12 themselves rotate in support bearings (not shown) mounted in the side walls of the straw walker compartment or the shafts 11 / 12 pass through the side walls and rotate in support bearings mounted in lateral support structures.
  • crank shafts 11 / 12 is connected to a drive mechanism (not shown) that is configured to drive the rotation of the shaft which—through each straw walker connecting two crank portions 15 / 16 —drives the rotation of the other shaft and the reciprocating motion of the straw walkers.
  • the drive mechanism is preferably powered by the combine's main engine, through a suitable power transmission system as generally known in the art.
  • the straw walkers have perforated surfaces 8 onto which the residue is transported, and a full bottom plate 9 , for transporting grains that have fallen through the perforations back towards the inlet section where the grains fall onto the grain pan 5 .
  • the set of straw walkers 10 as a whole is mounted on a support frame 20 that is pivotable about a pivot axis, so that the inclination angle of the straw walkers is adjustable.
  • a side view of a desirable embodiment is shown in FIG. 3 , in accordance with an exemplary embodiment of the present invention.
  • the pivot frame 20 is pivotable at the front side about a pivot axis 21 .
  • the frame 20 is supported by bearings in the side walls of the straw walker compartment or in lateral support structures.
  • one or more variable length actuators 22 are coupled between the frame 20 and a support structure 19 that may be fixed to the combine's chassis.
  • the actuators 22 are configured to adjust the inclination of the pivot frame 20 with respect to the level of the terrain.
  • the straw walkers 10 are mounted on a pair of crank shafts 11 / 12 that may be shaped in the same way as in the crank shafts illustrated in FIGS. 1 and 2 , i.e., provided with respective crank portions 15 / 16 onto which the straw walkers 10 are rotatably mounted.
  • These crank shafts 11 / 12 are rotatable with respect to the pivot frame 20 , so that the straw walker's reciprocating motion equally takes place with respect to the frame 20 , i.e., the straw walker's angular position is adjustable while the straw walker executes said reciprocating motion.
  • crank shafts 11 / 12 may extend outwards from the pivot frame 20 , through openings 23 in the side walls of the straw walker compartment, for example for connecting one of the crank shafts to a drive mechanism for driving the rotation of the shaft, desirably a drive mechanism coupled to the combine's main engine through a suitable power transmission system.
  • This drive mechanism would then require a means to drive the rotation of the crank shaft regardless of the angular position of the frame 20 . This could be done for example by applying a belt drive equipped with a tensioning system, as generally known in the art.
  • FIG. 4 shows a 3D view of a pivot frame 20 shaped as a rectangular frame comprising lateral beams 24 and a rear transversal beam 25 to which the actuators 22 are coupled.
  • the lateral beams 24 may for example be welded to a pair of pivot axles 26 which are pivotable about the pivot axis 21 , for example the pivot axles 26 may be supported by bearings 27 mounted in lateral support structures outside the straw walker compartment.
  • the lateral beams 24 may be pivotable about a fixed axle.
  • the crank shafts 11 / 12 may be supported by bearings 28 mounted in the lateral beams 24 of the pivot frame 20 .
  • the bearings 28 may be mounted in support structures that are fixed to the lateral beams 24 . As seen in FIGS.
  • the pivot axis 21 is desirably located in front of the straw walkers 10 , i.e. in front of the front rim 30 of the straw walkers 10 , regardless of the position of said front rim during the straw walker's reciprocating motion.
  • the pivot frame 20 may comprise a front portion 31 and a rear portion 32 , with the rear portion 32 carrying the straw walkers 10 , and the rotation axis 21 located within the front portion 31 , and wherein the front portion 31 is oriented at an upward obtuse angle with respect to the rear portion 32 , i.e. the front portion 31 is deflected upwards with respect to the rear portion 32 of the pivot frame.
  • the angle between the directions of the front and rear portions is desirably low, for example about 5-10°.
  • the rotation axis 21 is desirably located at the distal end.
  • FIG. 5 One of these embodiments is shown in FIG. 5 , in accordance with an exemplary embodiment of the present invention.
  • the pivot axis 21 coincides with the rotation axis 13 of the front crank shaft 11 .
  • This embodiment has the advantage that the front crank shaft may be coupled to a drive mechanism that does not need to be provided with a tensioning system or the like in order to adapt to a changing angular position of the crank shaft.
  • a drive mechanism as presently known for driving one of the crank shafts can thus be used without changes.
  • the inclination of the pivot frame 20 is adjusted on the basis of the measurement of one or more operational parameters of the combine harvester. This may be any of the following:
  • a loss sensor mounted downstream of the straw walkers 10 and configured to measure the amount of grains that are evacuated with the residue (i.e. that have not fallen through the straw walkers).
  • This may be a piezo-sensor mounted in connection with a plate and designed to detect impact of grains falling on the plate;
  • a sensor that measures the speed and/or layer thickness of the crop throughput on the straw walkers 10 , e.g. a camera-type sensor 40 mounted above the straw walkers as illustrated in FIGS. 3 and 5 ;
  • the angular position of the frame 20 and thus of the straw walkers 10 may be controlled depending on the circumstances detected by the sensors, by controlling the length of the variable length actuators 22 .
  • the pivot frame 20 may be lifted up when the throughput of residue material through the straw walkers is too fast, when increased grain loss is detected, or when the combine is driving uphill.
  • the pivot frame may be lowered, when the throughput is too slow, or when the combine is driving downhill.
  • the adjustment of the inclination angle of the pivot frame may be controlled automatically according to a pre-defined algorithm implemented in a control unit that receives inputs from one or more sensors and produces an output signal calculated by the algorithm, that is sent to the actuators 22 for positioning the frame at a calculated position.
  • the angle range for the pivot frame 20 may depend on the size and type of the machine.
  • the angular position of the frame may be adjustable in a range of 15° of the pivot angle measured with respect to the pivot axis 21 and with respect to a nominal angular position applied on flat terrain and average conditions.
  • the angle may then be adjustable in the range of ⁇ 7.5° to +7.5° on either side of this nominal position.
  • the described embodiments for adjusting the angular position of the straw walkers 10 may be combined with any known systems for regulating the rotation speed of the crank shafts 11 / 12 .
  • the systems described in WO-A-2014/106633, incorporated herein by reference, may be applied in combination with any of the embodiments described herein.
  • the straw walkers 10 may be supported on straight shafts provided with eccentrically mounted bearings, as shown in DE-A-19649020, which is incorporated herein by reference.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Harvester Elements (AREA)
  • Threshing Machine Elements (AREA)
US15/198,987 2015-06-30 2016-06-30 Combine harvester with adjustable inclination of straw walkers Active 2036-08-31 US10034430B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2015/5408A BE1023017B1 (nl) 2015-06-30 2015-06-30 Maaidorser met stroschudders met verstelbare helling
BE2015/5408 2015-06-30

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US20170000032A1 US20170000032A1 (en) 2017-01-05
US10034430B2 true US10034430B2 (en) 2018-07-31

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EP (1) EP3111743B1 (enrdf_load_html_response)
BE (1) BE1023017B1 (enrdf_load_html_response)
BR (1) BR102016015254B1 (enrdf_load_html_response)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190183053A1 (en) * 2017-12-16 2019-06-20 Deere And Company Harvester separation frame orientation adjustment
US20210392819A1 (en) * 2018-11-06 2021-12-23 Jakob Balling Bro SØRENSEN A grain separating apparatus for a combine harvester and a method for separating grain from straw material

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013201618A1 (de) * 2013-01-31 2014-07-31 Deere & Company Schwingungsaufnehmereinheit
US10493374B2 (en) * 2016-09-06 2019-12-03 Bizzybee LLC Short-path distillation apparatus and method
JP6833624B2 (ja) * 2017-06-06 2021-02-24 株式会社クボタ コンバイン
DE102018221418A1 (de) * 2018-12-11 2020-06-18 Deere & Company Strohschüttlerzusammenbau für einen Mähdrescher
JP7176022B2 (ja) * 2021-02-03 2022-11-21 株式会社クボタ コンバイン

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Publication number Priority date Publication date Assignee Title
US2661005A (en) * 1950-03-24 1953-12-01 Donald C Peters Chaffer attachment
US4548214A (en) 1984-10-11 1985-10-22 Sperry Corporation Fore-and-aft leveling mechanism for combine cleaning apparatus
US4557276A (en) 1984-10-11 1985-12-10 Sperry Corporation Four way leveling mechanism for combine cleaning apparatus
EP0178018A1 (en) * 1984-10-11 1986-04-16 FORD NEW HOLLAND, INC. (a Delaware corp.) Leveling mechanism for combine cleaning apparatus
EP0451358A1 (de) 1990-03-02 1991-10-16 Claas Ohg Hordenschüttler für selbstfahrende Mähdrescher
EP1584225A1 (de) 2004-04-06 2005-10-12 CLAAS Selbstfahrende Erntemaschinen GmbH Mähdrescher
US20060276240A1 (en) * 2005-06-06 2006-12-07 Josef Spechtel Crankshaft for a self-propelled agricultural machine
DE102005050751A1 (de) 2005-10-22 2007-08-09 Deere & Company, Moline Mähdrescher mit einem Strohschüttler
EP1817951A1 (de) 2006-02-14 2007-08-15 CLAAS Selbstfahrende Erntemaschinen GmbH Mähdrescher mit Hordenschüttler
WO2014106633A1 (en) 2013-01-03 2014-07-10 Cnh Industrial Belgium Nv A combine harvester comprising a straw walker control system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19649020A1 (de) 1996-11-27 1998-05-28 Same Deutz Fahr Spa Landwirtschaftliche Erntemaschine

Patent Citations (11)

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Publication number Priority date Publication date Assignee Title
US2661005A (en) * 1950-03-24 1953-12-01 Donald C Peters Chaffer attachment
US4548214A (en) 1984-10-11 1985-10-22 Sperry Corporation Fore-and-aft leveling mechanism for combine cleaning apparatus
US4557276A (en) 1984-10-11 1985-12-10 Sperry Corporation Four way leveling mechanism for combine cleaning apparatus
EP0178018A1 (en) * 1984-10-11 1986-04-16 FORD NEW HOLLAND, INC. (a Delaware corp.) Leveling mechanism for combine cleaning apparatus
EP0451358A1 (de) 1990-03-02 1991-10-16 Claas Ohg Hordenschüttler für selbstfahrende Mähdrescher
EP1584225A1 (de) 2004-04-06 2005-10-12 CLAAS Selbstfahrende Erntemaschinen GmbH Mähdrescher
US20060276240A1 (en) * 2005-06-06 2006-12-07 Josef Spechtel Crankshaft for a self-propelled agricultural machine
DE102005050751A1 (de) 2005-10-22 2007-08-09 Deere & Company, Moline Mähdrescher mit einem Strohschüttler
EP1817951A1 (de) 2006-02-14 2007-08-15 CLAAS Selbstfahrende Erntemaschinen GmbH Mähdrescher mit Hordenschüttler
WO2014106633A1 (en) 2013-01-03 2014-07-10 Cnh Industrial Belgium Nv A combine harvester comprising a straw walker control system
US20150342119A1 (en) 2013-01-03 2015-12-03 Cnh Industrial Belgium Nv A combine harvester comprising a straw walker control system

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Title
EP16176815, Extended European Search Report, dated Dec. 6, 2016, 5 pages.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190183053A1 (en) * 2017-12-16 2019-06-20 Deere And Company Harvester separation frame orientation adjustment
US10568267B2 (en) * 2017-12-16 2020-02-25 Deere & Company Harvester separation frame orientation adjustment
US11013180B2 (en) 2017-12-16 2021-05-25 Deere & Company Harvester separation frame orientation adjustment
US20210392819A1 (en) * 2018-11-06 2021-12-23 Jakob Balling Bro SØRENSEN A grain separating apparatus for a combine harvester and a method for separating grain from straw material
US11997953B2 (en) * 2018-11-06 2024-06-04 Jakob Sørensen Ip Aps Grain separating apparatus for a combine harvester and a method for separating grain from straw material

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BR102016015254B1 (pt) 2022-01-18
BR102016015254A8 (enrdf_load_html_response) 2018-02-27
BE1023017B1 (nl) 2016-11-04
EP3111743A1 (en) 2017-01-04
US20170000032A1 (en) 2017-01-05
EP3111743B1 (en) 2018-06-06
BR102016015254A2 (pt) 2017-01-03

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